Liquid circulating device



March 20, 1934. s. GARSHELIS 1,951,904

LIQUID GIRCULATING DEVICE Filed Dec. 26, 1930 v 3 Sheets-Sheet l z yzz Inventor A5 IMUEL Gaza/7544?.

A llomey March 20, 1934. s GARSHELIS 1,951,904

LIQUID CIRCULATING DEVICE Filed Dec. 26, 1930 3 Sheets-Sheet 2 Invenior Q2/1405. Gi /asfifus,

A l'iorney March 1934- s. sAsHELls LIQUID CIRCULATING DEVICE Filed Dec. 26, 1950 3 Sheets-Sheet 3 I rwenior Ai /M054. Grams/1:20,

A tlorney Patented Mar. 2.0, 193d 3G DEVICE Samuel Garshelih, New York, N. ll.

Application lileeember 2d, 1930, Serial No. 504,953

4 Claims.

This invention relates to new and useful movements in apparatus for circulating liquids, and more particularly it pertains to apparatus for use in circulating liquids and fluids for carry ing out medical treatment.

It is well known to medical science that cer tain internal disorders may be successfully treat ed by subjecting them to the action of heat, and for this purpose apparatus is employed forcirculating heated fluids through a continuous cir culating system a portion of which is brought in close or intimate relation with the affected area to be treated.

In the past, great difliculty has been experi-- enced with such apparatus in that so far as I am aware, it has not been possible to obtain a free circulation of the heated fluid, nor has it been possible for the attendant or person performing the operation to definitely ascertain the condition of the circulating fluid especially as to temperature.

One object of the present invention is to im= prove the construction and mode of operation of apparatus of the aforementioned type and to construct such apparatus that the attendant or operator may at all times acquaint himself with the conditions of the fluid, and the correct operation of the apparatus.

A feature of the invention resides in a new and novel means for impelling a fluid through a continuous path.

A further feature of the invention resides in the novel construction and arrangement of means whereby the temperature of the fluid may be ascertained at all times.

A further feature of the invention resides in a novel construction and arrangement of parts whereby the circulating fluid may be positively controlled as to speed and volume.

A still further feature ,bf the invention resides in new and novel means for heating the fluid, and for the control of/the heating thereof.

In carrying out the present invention, the entire apparatus which has to do with the heating and circulating of the fluid, is contained within a cabinet the fluid to be heated being contained within a tanl -and it is a further feature of the invention to provide means whereby the fluid may be replenished from time to time, and indi cation may be had to apprise the operator as to when the tank is filled during the filling operation, and also a gauge to indicate at all times the volume of fluid within the tanln.

Other features of the invention relate to cer tain novel and improved constructions, arrange (or. res-est) ments and combinations of parts hereinafter described and particularly pointed out in the claims, the advantages of which will be readily understood and appreciated by those skilled in the art.

The invention will be clearly understood from the accompanying drawings illustrating the in vention in its preferred form, and the following detailed description of the constructions therein shown.

In the drawings;

. Figure 1 is a view in front elevation of an apparatus constructed in accordance with the present invention,

Figure 2 is a longitudinal sectional elevation partly broken away,

Figure 3 is a horizontal sectional view taken on the line 33 of figure 1,

Figure 4 is a detail plan view of one of the fluid impellers, and;

Figure 5 is an edge View thereof.

Referring specifically to the drawings, the reference character 10 designates a. cabinet hav ing a suitable base 11, and a cover 12. The cover may be removable, and is preferably provided with a handle 13 by means of which the entire cabinet is rendered portable. The front wall of the cabinet is provided with a plurality of instruments whereby the various operating conditions may be ascertained merely by a glance and from. which wall regulation of the proper operation of the device may be had.

Mounted within the cabinet 10, there is a fluid supply tank 15 and this tank is adapted to contain the fluid to be circulated. The bottom wall 16 of the tank 15 is provided with a recess housing 17, the purpose of which is to carry a suitable electric heating element. By means of this heating element, the fluid Within the tank 15 may be maintained at the desired temperature which may be varied to meet different operating requirements.

Leading from the tank 15, and "extending through the front wall of the cabinet 10, there is a fluid discharge pipe 18 and this fluid discharge pipe is controlled by means of a valve or the like 19. A fluid return pipe 20 extends through the front wall of the housing and into the tank 15 and the flow of fluid through this pipe 20 is controlled by means of a valve 21. Connected to the pipes 18 and 20, there are suitable hose connections 22 and 23 which lead to the appliance through which the circulation is to be maintained and which is not herein illustrated.

Means is provided for impelling the fluid END through the pipes 18, 20, 22 and 23, and in the present embodiment of this invention, this means comprises a double rotor impeller. By reference to Figure 2, it will be noted that an impeller housing 25 is mounted in the tank 15, and this housing is divided by a horizontally extending partition 26 into two chambers 2'7 and 28 which chambers are superposed with relation to each other, the chamber 28 being located above the chamber 27.

The chamber 2'7 has mounted therein an impeller rotor 29, and mounted in the chamber 28, there is an impeller rotor 30. The pipe 18 heretofore mentioned leads from the upper chamber 28 and receives fluid discharged therefrom by the impeller 30 mounted therein. Fluid enters the chamber 28 through an opening 32 in the upper wall of the housing, this opening 32 being arranged at the axis of the impeller rotor 30 and after passing through the chamber and the pipe 18, is passed through the pipe 22 and returns to the tank 15 through the medium of the pipes 23 and 20, the rotor 29 in the chamber 27 aiding the circulation of the fluid by tending to draw the same through the pipe 20 it being understood that the blades of the rotor 29 are pitched in the opposite direction to those of the rotor 30.

From the foregoing it will be apparent that the circulation of the fluid is impelled in two directions, that is forced forwardly through the circuit by the impeller 30 and is drawn through the circuit in the opposite direction or in its return to the tank 15 by the impeller 29 these two impellers being mounted in their respective chambers formed by the partition 26. This construction insures a constant circulation of the entire fluid content of the circuit and prevents the building'up of pressure beyond a desired point at any part in the circuit.

The two impellers 29 and .30 are carried by a vertically disposed shaft 40 which is connected by means of a suitable coupling 41 to the armature shaft 42 of an electric motor 43 carried by a suitable bracket -14 attached to the cover of the tank or supported in any other suitable manner. The lower end of the shaft 40 engages or contacts with a roller bearing 45 which may be adjusted by means of a screw or the like 46 to take up end wise movement which may result in wear in the shaft or bearing. The motor may be adjustably secured to the bracket by means of screws or the like 47, and a compensating bearing 48 is employed for the upper end of the armature shaft of the motor.

By this construction it will be apparent that when the motor is operating, the shaft 40 will be rotated driving the impellers 29 and 30 to maintain the circulation of fluid heretofore described.

In the present embodiment of the invention, the circuit of the motor is not illustrated, but it is to be understood that the circuit of the motor is to include a switch such as 49 mounted on the front panel of the cabinet by means of which operation of the motor may be controlled.

By reference to Figures 1 and 3, it will be noted that the valves 19 and 21 heretofore mentioned as controlling the passage of fluid through the pipes 18 and 20 respectively, have operating handles or thumb pieces which project through the front wall of the cabinet, and are designated 50 and 51 respectively in Figures 1 and 3. Associated with these valve operating handles, there are suitable scales 52 by means of which the position of the valve may be determined at a glance.

Mounted in the pipe 18, and visible through a window such as 55 in the front wall of the cabinet, there is a thermometer 56 by means of which the temperature of the fluid as it is discharged from the tank 15 may be ascertained at a glance. The housing 1'7, as heretofore stated carries an electric heater by means of which the temperature of the fluid may be controlled, and while the said electric heater is not herein illustrated, it is to be understood that its circuit will include a switch such as 59 mounted on the front wall of the cabinet, and by means of which the current supplied to the electric heater may be varied at will to control the heating of the fluid contained in the tank 15. The control of this circuit is obtained by means of a rheostat switch designated 60, and the circuit is so arranged that by adjustment of this rheostat switch 60, to the desired degree of temperature for example a range of one twenty six to one hundred thirty degrees, (126 to 130), as illustrated at 61 in Figure 1, the proper amount of current will be supplied to the electric heater to maintain the fluid in the tank 15 at a degree of heat within the range designated.

As best illustrated in Figure 2 of the drawings, the tank 15 has a removable cover 65 which is secured in any desired manner to the body of the tank, and interposed between the cover 65 and the tank 15 there may be a suitable gasket 66.

Means is provided to fill the tank 15 with liquid, and in the present embodiment of the invention, this means comprises a pipe or the like 6'7 which extends through the cover 65 of the tank 15, its upper end projecting through the top wall of the cabinet as at 68. Means is also provided to indicate when the tank has been completely filled with fluid and this means consists of a float or the like '70 carried by an arm '71 pivotally mounted as at '72 in the cover 65 of the tank 15. As the level of liquid in the tank 15 rises, the float rises and engages a sliding pin or the like '73 which is slidably mounted in a suitable bearing '74 projecting from the top 65 of the tank 15. This pin is adapted to engage a spring arm or finger '75 which in turn is forced into engagement with a similar finger or the like '76. These two fingers '15 and '76 form the contact means for an electric circuit 7'7 which leads to a lamp 78 visible through a suitable window '79 in the top wall of the cabinet and as the contact members '75 and 76 are moved into engagement with each other, the lamp will be illuminated to indicate that the tank has been completely filled with fluid and the supply thereto may be cut off.

In addition to the foregoing liquid level indicating means, a liquid level gauge such as 80 may be employed. This gauge is connected to the tank 15 by means of pipes 81 and 82, and is positioned behind a window 83 in the. front wall of the cabinet whereby the liquid level in the tank 15 may be ascertained at a glance.

By reference to Figures 4 and 5 it will be noted that the rotors 29 and 30 heretofore mentioned each comprise a relatively thin disk like body portion having curved radially extending vanes or blades 96 which in turn are connected to a hub member 9'7. These vanes 96 are angularly disposed as best illustrated in Figure 5 and each impeller has its blade so arranged as to direct the flow of fluid in the proper direction.

By reference to Figure 1 it will be noted that a suitable time piece 102 may be applied to the front wall of the cabinet in order that the proper operation of the apparatus may be had.

From the foregoing it will be apparent that the present invention provides a new and novel apparatus for the circulation of fluids especially adapted for the treatment of diseases of the human body by means of heat which is conveyed to the parts or locations to be treated by the fluid. Furthermore, it will be apparent that with an apparatus constructed in accordance with the present invention, operating conditions may be ascertained merely by a glance at the instrument board or panel of the cabinet.

While the invention has been herein illustrated in a portable device, it is to be understood that the invention is not to be limited to a portable device, and that it may be practiced in the form of a stationary installation and furthermore it is to be understood that certain details of the invention may be varied without departing from the spirit thereof.

Having thus described the invention, what is claimed as new, and what it is desired to securev by United States Letters-Patent, is;

1. In apparatus of the class described, a fluid supply tank, a fluid discharge line leading from said tank, a fluid return line leading to said tank, an impeller housing within the tank and having communication therewith, an impeller mounted in said impeller housing and constructed and arranged to transfer fluid from said tank through said fluid discharge line, and a second fluid impeller mounted in said impeller housing and constructed and arranged to transfer fluid from said fluid return line to said fluid supply tank.

2. In apparatus of the class described, a fluid supply tank, a fluid discharge line leading from said tank, an impeller housing mounted in said tank, a partition dividing said housing into two chambers, each of which has communication with the tank, one of said chambers having communication with the fluid discharge line, the other chamber having communication with the return line, and means for impelling fluid through each of said lines.

3. In apparatus of the character described, a fluid supply tank, and means for circulating fluid from said tank and returning it thereto, said means comprising a housing, a partition dividing said housing into two chambers one of which constitutes an outlet chamber and the other a return chamber, and fluid impelling means mounted in each of said chambers.

41. In apparatus of .the character described, a fluid supply tank, and means for circulating fluid from said tank and returning it thereto, said means comprising a housing, a partition dividing said housing into two chambers one of which constitutes an outlet chamber and the other a return chamber, and fluid impelling means mounted in each of said chambers, and a single driving means for said fluid impelling means.

SAMUEL GARSHELIS. 

